// SPDX-License-Identifier: GPL-2.0

#include <vmlinux.h>
#include <bpf/bpf_helpers.h>

struct {
        __uint(type, BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE);
        __type(key, struct bpf_cgroup_storage_key);
        __type(value, __u64);
} storage_map SEC(".maps");

struct {
        __uint(type, BPF_MAP_TYPE_PROG_ARRAY);
        __uint(max_entries, 1);
        __uint(key_size, sizeof(__u32));
        __uint(value_size, sizeof(__u32));
} prog_array SEC(".maps");

SEC("cgroup_skb/egress")
int prog_array_owner(struct __sk_buff *skb)
{
        __u64 *storage;

        storage = bpf_get_local_storage(&storage_map, 0);
        if (storage)
                *storage = 1;

        bpf_tail_call(skb, &prog_array, 0);
        return 1;
}

char _license[] SEC("license") = "GPL";